Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Share data	3 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Net sales:
Products	$ 118,059	$ 103,487
Services	33,584	28,386
Total net sales	151,643	131,873
Cost of goods sold:
Products	98,265	86,107
Services	14,945	11,900
Total cost of goods sold	113,210	98,007
Gross margin	38,433	33,866
Operating expenses:
Selling, general, and administrative expenses	41,425	40,065
Restructuring charges	2,395	393
Operating loss	(5,387)	(6,592)
Other expenses (income):
Other expenses (income), net	138	(1,083)
Interest income	(33)	(23)
Interest expense	338	286
Loss before income taxes	(5,830)	(5,772)
Income tax (benefit) expense	(1,041)	4,480
Net loss	$ (4,789)	$ (10,252)
Net loss per share:
Basic and diluted	$ (0.21)	$ (0.45)
Weighted average shares outstanding:
Basic and diluted	22,953,235	22,750,740